The act of jumping and systematically crouching almost instantaneously after, usually to reach a higher objective/platform then previously unattainable. It is also a common tactic used in most FPS games to dodge bullets in combat and make themselves harder to track. Though, it is impossible to perform in real life.
Most recent games penalize jumping by making a player temporarily slower after the aformentioned action, making the Jump Crouch tactic much less effective and mostly rendered a last ditch effort. Though, mastery of this skill will have you spinning circles around your enemies.
Dragonforce43 Jump crouched up onto that ledge
Spartan2560 Jump Crouched and got me!!1!
OMG! u dont know how 2 jump crouch? fag lol